This winter's flu vaccine has been updated to protect against last year's Super-K strain, with the first doses being administered to schoolchildren and pregnant women. The update comes as the UK prepares for another potential flu season, with health experts warning of the need for caution.

Last winter's flu season was unexpected, beginning more than a month earlier than usual, with the Super-K strain taking centre stage. This year's vaccine has had a few tweaks to better match the subclade K virus that caused last year's outbreak.

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School children are being prioritised in the vaccination effort, with those aged two and older receiving a free nasal spray version from September onwards. Pregnant women will also be eligible for a free jab from Tuesday, as they are particularly vulnerable to the flu.

Other eligible groups, including people aged 65 and over, can get a free NHS flu shot from October if they meet certain criteria. This includes those with long-term health conditions, carers, and individuals experiencing homelessness or living in a hostel or night shelter.

Dr Amanda Doyle from NHS England has urged everyone to be cautious, highlighting the potential risks of flu, particularly for children and pregnant women. 'Flu can really knock you for six,' she said. 'It's vital that everyone offers comes forward for their vaccine.'

The vaccine cannot give you flu, but rather helps your body learn how to fight the virus. A single dose is all that is needed to offer protection ahead of winter, with high street pharmacies and GPs offering the jab.

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Additionally, adults will be invited to have a vaccine this winter to protect against RSV or Respiratory Syncytial Virus, which attacks the lungs. This vaccine will be offered to those aged 65 and over from September, rather than waiting until 75 for those with certain pre-existing health conditions.

In other news, NHS bosses are warning of potential chaos in ADHD and autism care, while HPV home-testing kits have become available for women in England who have missed cervical screening. Meanwhile, hypermobility - a little-known condition that causes pain and fatigue - is also being highlighted as a growing concern.